JPH02308963A - Electric fuel pump for car fuel tank - Google Patents

Electric fuel pump for car fuel tank

Info

Publication number
JPH02308963A
JPH02308963A JP2125613A JP12561390A JPH02308963A JP H02308963 A JPH02308963 A JP H02308963A JP 2125613 A JP2125613 A JP 2125613A JP 12561390 A JP12561390 A JP 12561390A JP H02308963 A JPH02308963 A JP H02308963A
Authority
JP
Japan
Prior art keywords
pump
housing
fuel
fuel tank
armature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2125613A
Other languages
Japanese (ja)
Inventor
Charles Henry Tuckey
チヤールズ ヘンリイ タツキイ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Walbro Corp
Original Assignee
Walbro Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Walbro Corp filed Critical Walbro Corp
Publication of JPH02308963A publication Critical patent/JPH02308963A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/007General arrangements of parts; Frames and supporting elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/008Enclosed motor pump units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M2037/082Details of the entry of the current supply lines into the pump housing, e.g. wire connectors, grommets, plugs or sockets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE: To keep pump vibration and out-of-balance from being transmitted to the pump housing of a fuel tank supporting body by mounting one end of a rotary pump shaft on one end of a flexible spindle and accommodating the spindle in an enclosure surrounding the spindle. CONSTITUTION: A pump assembly includes an inlet housing 20 on one end and an outlet housing 22 on the other end. A bearing shaft 40 provided on the upper end of an armature 30 extends into a hollow chamber 42. A flexible finger 50 is integrated with the end wall of the housing 22 inside the chamber 42. The finger 50 has sufficient rigidity to support the shaft 40 in the radial direction and also includes elasticity to move correspondingly to the eccentric 'run out' of the shaft 40. Thus transmission of out-of-balance or vibration from the pump to the surround mounting portions or a fuel tank can be reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、振動及び不拘i如要因による騒音の伝達を減
少させる車の燃料タンク用電動式燃料ポンプの構造およ
び取付し」に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the construction and installation of an electric fuel pump for a fuel tank of a vehicle that reduces the transmission of vibrations and noise due to unrelated factors.

〔従来の技術〕[Conventional technology]

エンジンマニポールトの気化器又は燃[1噴射装置の何
れかを介して内燃機関に炭化水素@[1を供給するため
に、電動式燃料ポンプが長年使用されている。加圧給燃
方法はエンジン区画の真空システム及び燃料ポンプGこ
代わって使用され、現在の車の始動特性に役立っている
Electric fuel pumps have been used for many years to supply hydrocarbons to internal combustion engines either through the carburetor or fuel injector of the engine manifold. Pressurized fueling methods have been used to replace engine compartment vacuum systems and fuel pumps G, which benefit the starting characteristics of modern vehicles.

燃料ポンプは、ごく普通には車後部の燃料タンクに取付
けられる。燃料ポンプを収容し、燃ギー1システムの圧
力制御弁からの燃料戻り流を受けるように、燃料収容体
を該燃料タンク内に使用する場合もある。
Fuel pumps are usually installed in the fuel tank at the rear of the vehicle. A fuel enclosure may be used within the fuel tank to house the fuel pump and receive fuel return flow from the pressure control valve of the fuel system.

かかるポンプを車の乗客区画の近く又は後方のタンク内
に配置するには、乗客に不快感を与えるようなポンプ作
動時の振動や騒音を軽減するための一貫した努力が必要
となる。
Locating such pumps in tanks near or behind the passenger compartment of a vehicle requires consistent efforts to reduce vibrations and noise during pump operation that may be unpleasant to passengers.

かかる努力は、振動及び作動音を減少さ1主るようなポ
ンプの取旬けや、ポンプノイズとなるようなキャビテー
ション及びフラッシュバンクを減少させる入念なポンプ
構造に関して支払わなければならない。ポンプの可撓取
付けに関しては、11)89年2月17日付の審査中の
特訓Set、No、07/312、259号及び198
8年10月25「1何の米国1.11許第4,780.
063号に記載されている。ポンプ構造は、1987年
10月6日付の米国特許に記載されている。
Such efforts must be made in terms of pump design to reduce vibration and operating noise, and careful pump construction to reduce cavitation and flashbanks that result in pump noise. Regarding the flexible installation of pumps, 11) Special training set under review dated February 17, 1989, No. 07/312, No. 259 and 198
October 25, 2008 ``1 What United States 1.11 Permit No. 4,780.
It is described in No. 063. The pump structure is described in a US patent dated October 6, 1987.

〔発明が解決しよ・うとする課題〕[Problem that the invention attempts to solve]

本発明の目的は、ポンプから周囲の取付部又は燃料タン
クへの不均衡又は振動の伝達を減少させるようなポンプ
構造を堤供することである。通常ポンプアーマチュアは
密閉されたポンプハウジング内に取付りたシャフトに取
付しプられろ。アーマチュアの均衡は完全ではない場合
があるので、アーマチュアが回転する時にいくらかの「
振れ」がある。更に、ポンプの始動及び停止時にトルク
や横揺れが生じる。
It is an object of the present invention to provide a pump structure that reduces the transmission of imbalances or vibrations from the pump to surrounding fittings or fuel tanks. The pump armature is normally mounted on a shaft mounted within a sealed pump housing. The balance of the armature may not be perfect, so when the armature rotates there will be some
There is "shake". Furthermore, torque and oscillation occur when the pump starts and stops.

〔課題を解決するための手段] 本発明の解決法によれば、回転ポンプシャフトの−・端
を可を尭スピンドルの一端に成句け、スピンドルによっ
て全ての「振れ」を吸収し、ポンプ囲繞体自体に伝達し
ないようにすることができる。
[Means for Solving the Problems] According to the solution of the present invention, the two ends of the rotary pump shaft are connected to one end of the two-way spindle, so that all the "runout" is absorbed by the spindle, and the pump enclosure You can prevent it from being transmitted to itself.

さらに、スピンドルを包囲する行止り室に該スピンドル
を収容し、室の開口端を反らせ板にしてポンプ出力のパ
ルス調整をする。
Further, the spindle is housed in a dead-end chamber surrounding the spindle, and the open end of the chamber is used as a warp plate to adjust the pulse of the pump output.

[実施例] 本発明の他の目的及び特徴は、当業者が本発明を実施可
能なように本発明の好適実施例を示す添付の図面を参照
して以下に詳述する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Other objects and features of the invention will be described in detail below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention to enable those skilled in the art to carry out the invention.

第1図に示すポンプ組立体は、一端に人ロバ・)ノジン
グ20と他端に出口ハウジング22を有する。
The pump assembly shown in FIG. 1 has a nosing 20 at one end and an outlet housing 22 at the other end.

該2個のハウジング相互間にある磁化リング24と半円
形永久磁石26は従来の如くアーマチュア30を回転可
能に取付けたアーマチュア室の周囲に設ける。該ポンプ
組立体は金属シェル31に包囲され、該シェルの末端部
は0型リングのシールにかかる。アーマチュアの下端乙
こおいて、矩形シャフト32はしっかり巻きつりた先細
コイルバネ34に固定され、該バネは燃料ポンプのロー
タ39内に延長する軸方向フィンガが38を有する駆動
カップ3にと駆動関係にある。確実駆動のために、該バ
ネは半径方向舌片を有し、シャツl−32と駆動カップ
36と係合する。
A magnetized ring 24 and a semicircular permanent magnet 26 between the two housings are conventionally disposed around an armature chamber in which an armature 30 is rotatably mounted. The pump assembly is surrounded by a metal shell 31, the distal end of which rests on a Type 0 ring seal. At the lower end of the armature, the rectangular shaft 32 is secured to a tightly wound tapered coil spring 34 which is in driving relationship with a drive cup 3 having axial fingers 38 extending into the rotor 39 of the fuel pump. be. For positive drive, the spring has radial tongues that engage the shirt l-32 and the drive cup 36.

アーマチュア30の上端Qに設げる軸受シャフト40は
、出口ハウジング22内の中空室42内に延長する。該
ハウジングの圧力出[1通路44は、燃料供給ラインと
連結可能なコネクタ48内のバネ付勢した出[1弁46
に通じる。回転軸線の周囲に等間隔で配置され、シャツ
I−40と接触する3個の懸垂可撓フィンガ50ば、室
42内のハウジング22の端壁と一体となる。該フィン
ガはシャフト40を半径方向に支持するのに十分な剛度
を有し、しかもポンプのハウジング自体に振動を伝えな
いで吸収するように該シャフトの偏心「振れ」に応答し
てわずかに移動する弾性をも有する。
A bearing shaft 40 provided at the upper end Q of the armature 30 extends into a hollow chamber 42 in the outlet housing 22 . The pressure outlet passageway 44 of the housing connects to a spring-loaded outlet valve 46 in a connector 48 connectable to a fuel supply line.
Leads to. Three suspended flexible fingers 50, equally spaced around the axis of rotation and in contact with the shirt I-40, are integral with the end wall of the housing 22 within the chamber 42. The fingers have sufficient stiffness to radially support the shaft 40, yet move slightly in response to eccentric "runout" of the shaft so as to absorb vibrations without transmitting them to the pump housing itself. It also has elasticity.

第1図に示す室42は中空で、反らせ板60によって部
分的に閉鎖されるが、この場合液戻らせ仮はフィンガ5
0と接触しないで間隙52を設けて該フィンガを包囲す
る(第2図)。室42はポンプ圧力パルスを調整する空
所であってもよい。
The chamber 42 shown in FIG.
A gap 52 surrounds the finger without contacting the finger (FIG. 2). Chamber 42 may be a cavity for regulating pump pressure pulses.

同様に該室はポンプ出力の圧力で凝縮する蒸気を集める
こともできる。液室は長い作動期間中部分的に充填され
るが、ポンプの非作動時に燃料は流出することになる。
Similarly, the chamber can also collect steam that condenses at the pressure of the pump output. The fluid chamber will be partially filled during long periods of operation, but fuel will flow out when the pump is inactive.

頂部のポンプシャフトのいかなる軌道運動も基部のバネ
継手34によって吸収される。したがって、本番運転中
にポンプアーマチュアがわずかに不均衡になっても、そ
の振動がポンプハウジングや、燃料タンク内にある周囲
の部品に伝達されることはない。さらに室42はポンプ
の出口パルスを調整するのを助ける。
Any orbital movement of the top pump shaft is absorbed by the base spring joint 34. Therefore, even if the pump armature becomes slightly unbalanced during production, the vibrations will not be transmitted to the pump housing or surrounding components within the fuel tank. Furthermore, chamber 42 helps regulate the pump outlet pulse.

第3図ないし第7図には本発明の別型実施例を示す。該
実施例では出口ハウジングのみを示す。
3 through 7 show alternative embodiments of the invention. In this example only the outlet housing is shown.

第3図の端百図には、第4図に示すようにアーマチュア
88の末端において整流子板86に対して弾性付勢され
るブラシ84を収容するブラシ用リセスをカバ゛−する
キャンプ82を備える出L1ハウジング80を示す。電
気コ不りク9oにより電気モータは制御回路に配置され
る。第5図及び第7図は、第3図の線5−5における出
r+ハウジング80の断面図である。燃料比[IO2は
第1図に46で示すような出口弁を有し、エンジンに通
じる燃料回路内にある。通路94は液体に応答して閉鎖
する特殊なリリーフ弁又は蒸気逃がし弁を受シJてもよ
いし、第7図に示すように96に閉塞してもよい。延長
部98はアーマチュア周囲に界磁石を位置決めしてそれ
らを分離させる。
The side view of FIG. 3 shows a camp 82 covering a brush recess that houses a brush 84 which is elastically biased against the commutator plate 86 at the distal end of the armature 88, as shown in FIG. The L1 housing 80 provided is shown. The electric motor is arranged in a control circuit by means of an electric connector 9o. 5 and 7 are cross-sectional views of the output r+ housing 80 taken along line 5--5 of FIG. 3. The fuel ratio [IO2 has an outlet valve as shown at 46 in FIG. 1 and is in the fuel circuit leading to the engine. Passage 94 may receive a special relief valve or vapor release valve that closes in response to liquid, or may be closed at 96 as shown in FIG. Extensions 98 position the field magnets around the armature and separate them.

矩形シャツl−100は整流子板86から延長する。ハ
ウジング80の中央には芯ニレメン1〜102があり、
ブラシ84を内蔵すると共に、ダイヤモンド形又は正方
形リセス108を形成するように106において切り離
した隔設可撓フィンガー04により形成される中央開口
部を有する(第6図)。該リセスの四方はシャフト10
0に担持され、第1図の可撓フィンガと同じ方法でハウ
ジング内にシャフトを支持する。アーマチュアの他端は
、第1図に示すように取付は可能である。各懸垂フィン
ガの両側には行止り室110がある。
A rectangular shirt l-100 extends from commutator plate 86. In the center of the housing 80 there are cores 1 to 102,
It contains a brush 84 and has a central opening formed by spaced apart flexible fingers 04 separated at 106 to form a diamond-shaped or square recess 108 (FIG. 6). The four sides of the recess are the shaft 10
0 and supports the shaft within the housing in the same manner as the flexible fingers of FIG. The other end of the armature can be attached as shown in FIG. There is a dead end chamber 110 on each side of each suspension finger.

〔発明の効果〕〔Effect of the invention〕

かくて、各実施例は片持式可撓フィンガ相互間に取付け
たアーマチュアシャフトの一端を示し、該フィンガは不
均衡や始動又は停止運動に応じて撓曲し、しかもポンプ
を安定した回転位置に保持する。かくて、振動及び不均
衡は燃料タンク支持体のポンプハウジングに伝達される
ことはない。
Thus, each embodiment shows one end of an armature shaft mounted between cantilevered flexible fingers that flex in response to imbalance or start-up or stop motion, yet maintain the pump in a stable rotational position. Hold. Thus, vibrations and imbalances are not transmitted to the pump housing of the fuel tank support.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例の1つを示す燃料ポンプの断面
図、 第2図は第1図の線2−2における断面図、第3図は本
発明の別形の端\面図、 第4図は第3図の線4−4における断面図、第5図は第
3図の線5−5におりる断面図、第6図は第4図の線6
−6における断面図、第7図はアーマチュアを取り外し
たポンプハウジングの一端を示す断面図である。 20・・・入口ハウジング、22 、80・・・出口ハ
ウジング、24・・・磁化リング1.26・・・永久磁
石、30.88・・・アーマチュア、32,100・・
・矩形シャフト、34・・・コイルバネ、36・・・駆
動ポンプ、38・・・フィンガ、40・・・軸受シャフ
ト、42・・・中空室、50 、1.04・・・可撓フ
ィンガ、84・・・ブラシ、86・・・整流子板、90
・・・電気コネクタ、92・・・燃料出口。
FIG. 1 is a sectional view of a fuel pump showing one embodiment of the present invention, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is an end/side view of another embodiment of the present invention. , Figure 4 is a sectional view taken along line 4--4 in Figure 3, Figure 5 is a sectional view taken along line 5-5 in Figure 3, and Figure 6 is a sectional view taken along line 6 in Figure 4.
-6 is a sectional view, and FIG. 7 is a sectional view showing one end of the pump housing with the armature removed. 20... Inlet housing, 22, 80... Outlet housing, 24... Magnetized ring 1.26... Permanent magnet, 30.88... Armature, 32,100...
- Rectangular shaft, 34... Coil spring, 36... Drive pump, 38... Finger, 40... Bearing shaft, 42... Hollow chamber, 50, 1.04... Flexible finger, 84 ... Brush, 86 ... Commutator plate, 90
...Electrical connector, 92...Fuel outlet.

Claims (5)

【特許請求の範囲】[Claims] (1)(a)車の燃料タンクに取付けられ、燃料入口と
燃料出口とを有するポンプハウジングと、 (b)該入口と該出口との間にて上記ハウジング内で回
転させるためのモータアーマチュアと、(c)該アーマ
チュアにより駆動させるように上記入口と隣接する回転
ポンプと、 (d)上記アーマチュアの一端上にある軸シャフトを上
記回転ポンプに回転可能に連結させる第1装置と、 (e)上記軸シャフトの他端を半径方向にとらえるよう
に内部リセスを有する該ハウジング内部の一端から懸垂
する細長い可撓装置を包含する該アーマチュアの軸シャ
フトの該他端を取付けるための第2装置とを包含し、 これによって該第2装置が、振動や不均衡による該アー
マチュアの偏心運動を上記ハウジングに伝達しないで吸
収するように撓曲することを特徴とする車の燃料タンク
用電動式燃料ポンプ。
(1) (a) a pump housing attached to a fuel tank of a vehicle and having a fuel inlet and a fuel outlet; (b) a motor armature for rotation within the housing between the inlet and the outlet; (c) a rotary pump adjacent the inlet so as to be driven by the armature; (d) a first device rotatably coupling an axial shaft on one end of the armature to the rotary pump; a second device for attaching the other end of the axial shaft of the armature, including an elongated flexible device depending from one end within the housing having an internal recess for radially capturing the other end of the axial shaft; 1. An electric fuel pump for a fuel tank of a vehicle, wherein the second device flexes to absorb eccentric movement of the armature due to vibration or imbalance without transmitting it to the housing.
(2)上記第1装置が、一端にある該軸シャフトと他端
にて該ポンプ上の連結エレメントを係合させるコイルバ
ネを包含し、該バネにより、該シャフトの偏心動作によ
る該軸シャフトの運動を可能にする請求項1記載の車の
燃料タンク用電動式燃料ポンプ。
(2) the first device includes a coil spring for engaging the axial shaft at one end and a coupling element on the pump at the other end, the spring causing movement of the axial shaft by eccentric movement of the shaft; The electric fuel pump for a fuel tank of a vehicle according to claim 1, which enables the following.
(3)上記第2装置の三個の弾性リーフの中央に近い端
部が、該ハウジングの1端に取付けられ、末端部が該軸
シャフトの該他端を包囲する請求項1記載の車の燃料タ
ンク用電動式燃料ポンプ。
(3) A vehicle according to claim 1, wherein the ends near the center of the three elastic leaves of the second device are attached to one end of the housing, and the distal ends surround the other end of the axle shaft. Electric fuel pump for fuel tank.
(4)上記ハウジング上に形成される室が細長い該可撓
装置を包囲し、該室の基部にある反らせ板装置が該可撓
装置の末端部と該軸シャフトの該他端を収容する開口部
を有し、該室がポンプ出口のパルスを調整し、ポンプ出
口に圧力が存在するときに凝縮する蒸気を集める空所を
包囲する役割を果たす請求項1記載の車の燃料タンク用
電動式燃料ポンプ。
(4) A chamber formed on the housing surrounds the elongated flexible device, and a baffle plate device at the base of the chamber has an opening for receiving the distal end of the flexible device and the other end of the axial shaft. 2. The electric motor for a fuel tank of a car according to claim 1, wherein the chamber serves to regulate the pulse of the pump outlet and to enclose a cavity that collects vapors that condense when pressure is present at the pump outlet. Fuel pump.
(5)上記ポンプハウジングの成形プラスチック材め出
口端に設ける上記懸垂装置が、上記出口端と一体成形し
た末端付近部と、該ポンプハウジング内部に露出する開
口端を備える行止り室によって包囲される分割末端とを
包含する請求項1記載の車の燃料タンク用電動式燃料ポ
ンプ。
(5) The suspension device provided at the outlet end of the molded plastic material of the pump housing is surrounded by a dead-end chamber having a portion near the end integrally molded with the outlet end and an open end exposed inside the pump housing. 2. The electric fuel pump for a vehicle fuel tank according to claim 1, further comprising a split end.
JP2125613A 1989-05-18 1990-05-17 Electric fuel pump for car fuel tank Pending JPH02308963A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/353,758 US4948346A (en) 1989-05-18 1989-05-18 Fuel pump mount for reduction of vibration transmission
US353,758 1989-05-18

Publications (1)

Publication Number Publication Date
JPH02308963A true JPH02308963A (en) 1990-12-21

Family

ID=23390442

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2125613A Pending JPH02308963A (en) 1989-05-18 1990-05-17 Electric fuel pump for car fuel tank

Country Status (3)

Country Link
US (1) US4948346A (en)
JP (1) JPH02308963A (en)
DE (1) DE4016092A1 (en)

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JP6056719B2 (en) * 2013-09-17 2017-01-11 株式会社デンソー Fuel pump
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Also Published As

Publication number Publication date
DE4016092A1 (en) 1990-11-22
US4948346A (en) 1990-08-14

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